<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
</head>

<body>
    <div id="app">
        <ul>
            <li v-for="(item, index) in dataList" :key="index" @click="delBtn(item.id)">
                <span>{{item.id}}</span>
                <button>{{item.content}}</button>
            </li>
        </ul>
        <button @click="btnRandom">生成</button>
    </div>
    <script src="./vue.js"></script>
    <script>
        const app = new Vue({
            el: "#app",
            data: {
                dataList: [],
                randomVal: "",
            },
            methods: {
                btnRandom() {
                    //Math.floor(Math.random() * (m-n)) + n;
                    this.dataList.push({
                        id: Math.floor(Math.random() * 20),
                        content: "删除"
                    });
                },
                delBtn(id) {
                    this.dataList = this.dataList.filter((item) => item.id !== id);
                }
            },
        });
    </script>
</body>

</html>